Derrick dumping device.



C. H. PETERS, H HART & S. C. STINEGIPHER. DEREIUK DUMPING DEVICE.

APPLIOATIOR FILED NOV.5.1909

952,350. Patented Mar. 15, 1910.

2 SHEETS-SHEET 2.

ATTORNEYS M W on. ma-unocnnmm wn-smmm n c UNITED STATES PATENT OFFICE.

CURTIS H. PETERS, HARRY HART, AND SAMUEL C. STIN'ECIPHER, OF BROW'N STATION, NEW YORK.

DERRICK DUMPING DEVICE.

Specification of Letters Patent.

Patented Mar. 15, 1914).

Application filed November 5, 1909. Serial No. 526,393.

To all whom it may concern:

lie it known that we, Gnarls ll. Pirrnns, llamn' llAn'r, and SAMUEL C. S'riNnclrunn, all citizens of the United States, and residents oi Brown Station, in the county of Ulster and State of New York, have invented a new and Improved Derrick Dum ing Device, ot which the following is a in l, clear, and exact description.

The invention relates to cranes and derrieks, and its object is to provide a new and improved derrick dumping device, arranged to permit of tilting the skip or bucket at any time and in whatever position the boom may be in at the time.

For the purpose mentioned, use is made of a dump drum and a dump line adapted to be wound up or unwound on the said dump drum, the dump line passing from the drum through a sheave block, swiveled on the lower end of the mast, to then pass over hoisting means on the upper end of the mast and the outer end of the boom, to connect with the skip or bucket to tilt the latter whenever it is desired to do so.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Fi ure 1 is a side elevation of a derrick prov1ded with the dumping device; Fig. 2 is an enlarged perspective view of the skip; Fig. 3 is an enlarged side elevation of the motor gearing for driving the boom line drum, the hoisting drum and the dump line drum; and Fig. 4 is an enlarged sectional plan View of the lower end of the boom and the swivel sheave block for the dump line.

On a suitable platform A is mounted to turn the mast B, journaled at its upper end in a suitable brace C, extending from the platform A. The boom D is hung on the lower end of the mast B, and the boom line E for supporting the outer end of the boom passes over the usual sheaves E, E of which the sheave E is held on the outer end of the boom D, and the sheave E is held on the upper end of the mast B. The boom line E asses from the sheave E over a double pu ley F near the upper end of the mast B, and then down alon side the mast through the pivot B thereo and around a pulley i to the boom line drum (l, gearing with and adapted to be driven by the motor [I mounted on the platform A. The motor H is also geared with the hoisting drum 1, on which winds and unwinds the hoisting line passing over the pulleys h" and I, then outward over a pulley K journaled on the boom 1), the line J then passing around sheaves L and ll, of which the latter is hung on the outer end of the boom 1). The sheave L supports the usual chain N carry ing the skip or bucket oi the usual construction, and connected at its back with the lower end of the d mnp line 1 passing over a. pulley Q held on the boom 1), to then pass over a pulley Q, held on the upper end of the mast B, the line then passing under a. sheave Q held in a block Q swiveled on brackets R attached to the lower portion oi the mast B. The dump line P passes vfrom the sheave Q to the dmnp drum S, eou nected by gearing with the motor ll, so as to wind up or unwind the dump line 1 on the drum S whenever it is desired to do so.

It is understood that the usual means are provided for enabling the operator in charge of the derrick to throw any one of the drums G, I and S in or out of gear when using the derrick.

It is further understood that the boom line E and the drum G are em loyed to swim the boom D into the desire inclined position and to hold it therein, while the hoisting line J and the drum I are used for raising and lowering the skip O and the load contained therein, and the dump line P and the drum S are used to tilt the skip 0 whenever it is desired to dump the contents of the skip at the desired place. As the skip is raised or lowered, the drum S lets out or takes up the slack in the dump line P, and when the skip O is in position to dump, the hoist line J is held statlonary and the dump line P is hauled in, thus swinging the skip into dumping position.

If desired, the dump line P may be held stationary while the hoist line J is paid out, thus lowering the front of the skip and dumping the contents thereof.

By having the sheave block Q swiveled on the mast B, it is evident that the latter can be readily turned, to brin the boom I) into the desired position, an at the same time the sheave Q? and its bioek Q are ait ways in ahnelnent with the drum b, thus insuring a proper winding up and unwinding ot the dump line For the purpose previously mentioned.

Having thus deserihed our invention, we riaim as new and desire to secure by Letters Patent 1. r\ (Ii-rriek dumpin device comprising a dump drunn a dump iine winding up and unwinding on the said dump drum, a sheave swiveied on the lower end of the mast oi the derrirk for the passage of the said dump line from the said dump drum, guide puiieys for the dump line on the upper end of the derrirk mast and the outer end of the derrirk hoom. the end of the said dump line living lflllllt't'ttti with the haek ot' the derrirk skip.

2. derriek roniprising a mast, a boom, a skip. a boom line ronneeted with the said hoonn a hoisting line supporting the said skin a dump line ['(Hllltt'ttd with the said skip. a motor. a boom iine drum driven from the said motor. a hoisting drum for the said hoisting line and adapted to be driven h v the said motor, and a dump drum for the said dump line and adapted to be driven by the said motor.

:5. A derrick, comprising a mast, a boom, a skip, a boom line connected with the said boom, a hoisting line supporting the said skip, a dump line eonneeted with the said skip, a motor, a boom line drum driven from the said motor, a hoisting drum for the said hoistil'ig line and adapted to be driven by the said motor, a dump drum for the said dump line and adapted to be driven by the said motor, a sheave for the passage oi the dump line and swiveied on the lower end of the said mast, and guiding means for the said dump hne on the upper end of the said mast and the outer end of the said boom.

In testimony whereof we have signed our nan'ies to H115 specification 1n the presence of two subscribing witnesses.

CURTIS TI. PETERS. HARRY HART. SAMUEL (I. STINECIPHER.

\Vitnesses E. G. AIMSGEON, Finn) K. BETTS, Jr. 

